Spring-scale.



PATENTED JULY 26, 1904.

L. B. GAILORNEAU.

SPRING SCALE. APPLICATION FILED AUG. 11, 1903.

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I Mmfar Jocaia B. Ga/(irn/ea/w UNITED STATES Patented July 26, 1904.

PATENT OFFICE,

LOUIS B. GALORNEAU, OF DETROIT, MICHIGAN, ASSIGNOR TO IVALTER F.STIMPSON, OF DETROIT, MICHIGAN.

SPRING-SCALE.

SPECIFICATION forming part of Letters Patent No. 766,143, dated July 26,1904..

Application filed August 11, 1903. Serial Nol69,065. (No model.)

To all whom it may concern.-

Be it known that I, LOUIS B. GALORNEAU, a citizen of the United States,residing at Detroit, in the county of Vayne and State of Michigan, haveinvented certain new and use ful Improvements in Spring-Scales, of whichthe following is a specification, reference being had therein to theaccompanying drawings.

The invention relates to spring-scales, and more particularly to thattype in which movement of the balance is retarded by a dash-pot.

It is the object of the invention to provide a simple construction andone in which the plunger of the dash-pot is freed from binding.

The invention consists in the peculiar construction, arrangement, andcombination of parts, as hereinafter set forth.

In the drawings, Figure 1 is a vertical crosssection through the scale.Fig. 2 is an enlarged view of the dash-pot and plunger.

A is the weighing-spring, and B the draftbar connected thereto, of aspring-scale. As shown, this scale is of the cylinder type, thedraft-bar B being provided with a pivoted rack-bar O, meshing with thepinion D on the shaft E, supporting the cylinder F. The shaft E isjournaled in a suitable frame G, which is connected to the casing H,inclosing the cylinder, and also to the frame of easing I, connectingwith the hanger J The latter forms the support for the upper end of thespringA, an adjustment being provided comprising a screw-threaded shanka, to which the spring is attached, said shank passing through a centralaperture in the hanger and engaging with an adjusting-nut I).

Surrounding the spring A and arranged Within the casing I is thedash-pot K. This is pivotally secured at its upper end to the shank a,which latter is provided with a ball 0, engaging a socketed bearing (Zin the head of the dash-pot.

L is the piston or plunger of the dash-pot, which is securedintermediate the spring A and the draft-bar B.

WVith the arrangement thus far described it will be understood that themovement of the draft-bar occasioned by the weight in the weighing-pan(not shown) will be communicated to the cylinder through the rack O andpinion D and that this movement will be retarded by the plunger L in thedash-pot K. Thus the continuous oscillation of the cylinder, which mightotherwise occur, is prevented.

It is essential to the accuracy of the scale that this dash-pot shouldnot in any way bind the draft-bar, so as to prevent the latter fromassuming its proper position under load. It is also necessary that thedraft-bar should be given a certain freedom of lateral movement. Thelatter is provided for by the universal connection between the cylinderof the dashpot and the shank a, which permits the free oscillation ofsaid cylinder.

To prevent binding of the plunger in the cylinder, this also isconnected to the draft-bar and spring by a universally-jointedconnection. Asshown, this consists of a shank M, having a ball thereonengaging with the socket f in the plunger head or piston L. The socket fis preferably arranged centrally within the piston, which latter isrecessed at opposite ends and has a head or diaphragm g, in which thesocket is formed, and it is a detachable plate forming the complementaryportion of the socket.

The apertures in the diaphragm g and the plate It are larger than theshank M, so as to permit of a free oscillatory movement of the piston L,pivoted on the ball 0. Thus in whatever position the cylinder K may moveand whatever its relation in angularity may be to the draft-bar B andspring A the piston L is always free to arrange its axis in coincidencewith the axis of the cylinder.

The shank M is preferably threaded at its lower end to engage with ascrew-threaded socket in the draw-bar. At its upper end it is preferablybifurcated and is pivotally secured to a shank '5, attached to the lowerend of the spring. This pivotal connection is formed by the pin 2", andthe effect is to provide an independent angular movement of the springand draw-bar.

hat I claim as my invention is 1. In a spring-scale the combination witha draft-bar, and a surrounding dash-pot of a plunger for said dash-pot,having a universally-iointed connection with said bar, 'a pinion, a rackarranged to engage the pinion, lvoted to said bar whereby the rack mayremain in contact with the pinion irrespective of the position of thebar relative to the plunger. I

2. In a spring-scale, the combination with a weighing-spring anddraft-bar, of a dash-pot surrounding said spring and bar, a plungerwithin the dash-pot, a shank forming a connection between said springand draft-bar, and a universally-jointed connection between said plungerand shank.

3. In a spring-scale the combination with a weighing-spring, anddraft-bar, of a dash-pot surrounding said spring and bar, a plungerwithin said dash-pot having a socket therein, a shank forming aconnection between said spring, and draft-bar, and having a ballengaging the socket for forming a universallyjointed connection betweensaid shank and plunger.

4:. In a spring-scale, the combination with a weighing-spring, anddraft-bar, of adash-pot surroundingsaid spring and bar, a shank formingthe connection between said spring and draft-bar, and having a ballthereon, and a plunger for said dash-pot, centrally socketed to engagesaid ball, and form a universallyjointed connection with said draft barand spring.

5. In a spring-scale, the combination with a weighing-spring anddraft-bar, of a dash-pot Within which the same are adapted toreciprocate, a connecting means between the spring and bar, a plungerwithin the dash-pot, and a universally-jointed connection between theplunger and said first-mentioned connecting means.

6. In a spring-scale, the combination with a weighing-spring anddraft-bar, of a dash-pot surrounding said spring and bar, a plungerwithin the dash-pot, a shank forming a connection between said springand draft-bar, a pivotal connection between said shank and spring, and auniversally-jointed connection between said plunger and shank.

7 In a spring-scale, the combination with a weighing-spring anddraw-bar, ofa dash-pot surrounding said spring and bar, a shank forminga connection between said spring and draw-bar, a pivotal connectionbetween said shank and spring, a ball on the shank, a plunger for thedash-pot having a socket engaging the said ball and forming auniversallyjointed connection between said draw-bar and shank.

8. In a spring-scale, the combination with a weighing-spring anddraft-bar, of a dash-pot surrounding said spring and bar, a shank havinga screw-threaded connection with said bar and a pivotal connection withsaid spring, and a plunger having a universally-jointed connection withsaid shank.

9. In a spring-scale, the combination with a weighing-spring, and adraft-bar, of a dashpot surrounding said spring and bar, a shank havinga screw-threaded connection with said bar and a pivotal connection withthe spring, a ball on said shank, and a plunger for the dash-potcentrally socketed to engage said ball.

10. In a spring-scale, the combination with a weighing-spring anddraft-bar, of a dash-pot surrounding said spring and bar, a shankforming the connection between said spring and draft-bar, and having aball thereon, and a plunger centrally socketed to engage said ball, theupper and lower portion of said plunger having a concaved portionadjacent the socket, for permitting lateral movement of the shank.

In testimony whereof I aflix my signature in presence'of two witnesses.

LOUIS B. GALORNEAU.

WVitnesses:

JAMES P. BARRY, Gno. W. GRAvns.

